Home / 426,055,581.60-639,083,372.40-219,431,320.80

Finding the Fourth Proportional to 426,055,581.60, 639,083,372.40 and 219,431,320.80

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Solution

The fourth proportional to 426,055,581.60, 639,083,372.40 and 219,431,320.80 is: 329,146,981.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,055,581.60 : 639,083,372.40 = 219,431,320.80 : x
  2. Step 2: Convert to fraction form
    426,055,581.60/639,083,372.40 = 219,431,320.80/x
  3. Step 3: Cross multiply
    426,055,581.60x = 639,083,372.40 × 219,431,320.80
  4. Step 4: Simplify right side
    426,055,581.60x = 140,234,908,507,050,272
  5. Step 5: Solve for x
    x = 140,234,908,507,050,272/426,055,581.60
  6. Step 6: Final answer
    x = 329,146,981.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.